Improvement in gang-plows



2 Sheets--Shee l.

A. H. BURLINGAME.

-Gang-Plows.

Patented June 30,1874.

2Sheets--Sheet2- A. H. BURLINGAME. Slang-Flows.` No.l52,458. Patenteduneaonam TNTID STATES PATENT OFFICE.

ALBERT H. BURLINGAME, oF sPAnrA, ILLINOIS.

IMPROVEMENT IN GANG-FLOWS.

Specification forming part of Letters Patent No. 152,458, dated June 30, 1874; application tiled May 2, 1874.

' which- Figure l is a perspective view of the gangplow; one supporting-wheel is removed, and one of the seat-springs broken away. Fig. 2 is a vertical longitudinal section of a portion of the gang plow, with the crank-axle adjusted to nearly its lowest point, both crank-arms being in the same position with respect to the axle. Fig. 3 is a longitudinal section of the crank-axle, its arms being adjusted inposi tions just the reverse of one another.

The nature of my invention consists, first,

in the tubular axle last to the frame. and having a crank connected to each of its ends by Ineans of a groove in each of the arms, and a confining s crew passed through the axle into the said groove, in combination with adjusting-levers and notched stop-bars of' segment form. Second, it consists in two oblique bars pivoted, respectively, to the beams of the plows by their lower ends, and to one another at their' upper ends, and a horizontal adjusting` and stay bar pivoted by one of its ends to one of the oblique bars, and confined by its other end with a pin to the otherbar, in combination with laterally-adjustable pendants, to which the plows are attached.

Third, it consists in an extension ot' one of the oblique bars at a point beyond the pivot which connects them together, in combination with van oblique suspending and lifting chain attached to the lifting-lever, whereby the forward plow is started out ot' the ground. some time previouslyr to the starting of the rear plow out of the ground, and thus the labor of lifting decreased at the most important time, viz., when the resistance is the greatest.

To enable others skilled in the art to make and use my invention, I will proceed to describe it.

A is a frame with three rectangular sides.

the pendants.

Bis an arched bridge or brace mounted on the rear ot' the frame. C is the drivers seat set on springs attached to the arched support. D is the axle to which the frame is firmly fastened by ordinary clips; D D', the cranks of the axle; E E, spring-levers attached to the cranks; F F, notched segments attached, respectively, to the side bars of the frame; G, the supporting-wheels ofthe frame; H, tongue or draft-pole; I I, plows connected, respectively, to pendants J and J ofthe axle and cross-bar K ot' the frame. L L are braces ot' M, M1, and M2 are the bars for keeping' the plows apart, and also for etlectin g the rising otl one plow out ot' the ground previously to the rising of the other. 0 is the angular foot-lever, made so-as to yield slightly forward of its fulcrum, and is pivoted to a bracket of the arch B at the point a. P is the notched stop for holding the lever down when the plows have been raised. By this construction of stop and lever the driver can automatically latch up or let down the plows.

The axle is made of gas-tubing, with a screw-hole, b, cut through it at each of its ends. The crank-arms are solid, and around their inner ends a groove, c, is cut in them. These grooved ends are inserted into the gastube axle, and screws d are screwed into the holes b until their ends enter the grooves o o, as shown in Fig. 3. By this means a connection between the axle and arms is effected, and the arms can be turned round separately, more or less, by the levers E E, while the axle remains stationary. The levers are flattened between their ends, so as to have aspring action; and in turning the cranks these levers are sprung outward from the segments, so as to pass the notches in the same, and when the adjustment 'is effected the levers spring into the notches of the segments and hold the cranks in their adjusted position. 'This manner of constructing the axle out of a tube, and with solid turning-crank, is a very simple and convenient one, and it enables me to make the axle light and strong, as well as very cheap, and it obviates the necessity of turning the axle in its bearings on the frame.

The pendant J of the rear plow has anopen bracket, d, at its lower end. A similar bracket,

(l, is at the lower end of the f'ront plow. To

these brackets the plow-beams arc hinged, as at e e. The upper end ot' the pendant of the rear plow is fastened to the axle by a sliding clip or yoke, f, of ordinary construction. The pendant J ot the front plow has an angular bend near its upper end,and the horizontal portion g ts against the under side of the cross-beam K of the frame, and is confined by a bolt or bolts, h, said bolts passing through an oblon g lateral slot, z', cut through said beam. The braces L L are pivoted to the frame at the points]l j, and attached rmly to the lower ends of the pendants. By this means ot' attachingthe beams to laterally-adjustable pendants the plows are capable of being set nearer to or farther from one another. The single beams and single pendants, braced las shown, make the machine very simple and light, and yet strong.

The bars M M1 M2 act as a lateral stay between the plows, as will be evident from the drawings; and by setting the bar M2 inward or outward by means ot' the holes 7c and pin k', the plows are adjusted laterally, either toward or from one another. The extension eye portion l of the bar Ml, by which the plows are lifted through the chain, is lateral to or on one side of the angle formed by the bars M M1, and to this portion lthe Alifting-chain N is attached by one of its ends, and by its other end to the arm of the elbow-lever O, as shown. The arm of the elbow-lever is set to one side ot' the extension l of the bar M1, and therefore the chain passes to it in a slightly oblique line. By this arrangement the irst pull of the lever is upon the bar Ml, and the effect is to raise the front plow a short distance outvof' the ground before the rear plow is started. This may be donc by slotting the bar M1 at the point where the pivot which connects them is applied. The footlever runs forward from its rocking arm to the front of the frame, and tits into the catch P whenever desired. It has its front end bent into the form ofa treadle, with a side projection, m, for the foot to bear against when it is desired to release the lever from the catch.

What I claim as new, and desire Ito secure by Letters Patent, is

1. The tubular axle fastened to the plowframe and having connecting screws or pins, the solid revolving crank-arms having grooves in their circumference, the adjusting-levers, and the notched stop-bars, all combined substantially as and for the purpose herein described.

2. The bars M, M1, and M2, constructed as described, in combination with the plows and laterally-adjustable pendants of the frame and axle, as and for the purpose herein described.

3. The combination of the oblique liftingchain N, the bars M Ml M2, provided with a lifting extension, and the independently-hin ged plows, substantially as described.

ALBERT H. BURLINGAME. Witnesses J. W. MCCORMACK, C. W. MILLER. 

